Nick Jonas: I'm So Excited to Watch Niece Alena Grow Up

Nick Jonas shows off his amazing physique as he exits the gym after a workout on Monday afternoon (March 3) in West Hollywood, Calif.

The 21-year-old entertainer recently opened up about being a new uncle to niece Alena Rose.

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“It’s great,” Nick told E! News. “It’s an immediate responsibility and love for someone that you’re going to watch grow up, which is beautiful and I’m just so excited to watch her do that.”

The week before, Nick hit up the 2014 Vanity Fair Young Hollywood Party held at No Vacancy in Los Angeles.